Water Transparent FallOff - help!

Support Materials and Textures
1

Hello to all.

As the title suggests, I would like some help with the following material:

Node_Water.jpg1259×593 275 KB

I’m trying to create a material water where i can control the muddy according to its depth. For create it, I have used the “Volume Absorbiition” shader (recommended from help of Blender). I tried to add a falloff material to control the surface transparency but I’ve more problem.
Basically I want to control the falloff in the z axis (depth) of the material so that it appears transparent (or slightly) in surface and deep muddy.

Test_Water_image.jpg960×540 509 KB

So the question is: where I’m wrong in the material construction? Can someone help me understand?

Thanks in advance for any help :slight_smile:

2

your shader is a bit strange. try to keep it simple, just adding what really works:

screen.png874×405 71.3 KB

3

Thanks Secrop for your quick response! :slight_smile:

Your example (thanks for the tip on the caustic with Light Path) is was my starting point for the creation of the material. Something I really need is a transparency based on falloff. For example (no real image):


As you will notice, the ball edges are blurred to get up to transparency, here’s why I used a map Normal/Fresnel/Coloramp (falloff?). How do I get to a result like the picture?

Thanks for support!

Edit: the strange value for Bup map is wanted to exaggerate the effect

4

the glass shader already does this for you. that’s why there is an IOR socket.

if you want to create a new glass shader from scratch, then you’ll need to use the fresnel function to separate reflection rays from refracted rays.

5

I know what creates the IOR in the material Glass, but it does not create what I try to do. Could you give me an example or give a link where I can see your advice for separate reflection rays from refracted rays in material using fresnel?

Thanks again!

6

here’s the how the glass shader is inside:

screen.png699×367 46.1 KB

1 Like
7

Thanks again Secrop for this important information (+1)!! Now I try it with your advice and see what happens :smiley: I’ll know soon!!